聚酰亚胺胶粘剂改性研究进展

总结了近年来PI(聚酰亚胺)胶粘剂改性方法的研究进展。重点介绍了目前典型的无机粒子[如黏土、多壁碳纳米管(MWNT)、纳米二氧化硅(SiO2)、纳米二氧化钛(TiO2)和纳米氧化铝(Al2O3)等]与PI形成的复合胶粘剂的改性进展。最后对PI胶粘剂的发展前景进行了展望。     

聚酰亚胺胶粘剂的改性研究

介绍了聚酰亚胺(PI)胶粘剂改性的研究进展,详细讨论了缩合型PI胶粘剂、热塑性PI胶粘剂和加成型PI胶粘剂的发展现状、最新进展、性能(物理机械性能、耐热性、耐化学性和成型加工性)及其在各领域中的应用。总结了PI胶粘剂存在的具体问题和未来的发展趋势。     

B_4C用于PI和804胶粘剂的改性与耐温性能研究

综述了PI(聚酰亚胺)系列胶粘剂和804有机硅树脂胶粘剂的改性方案。采用B_4C(碳化硼)作为耐高温填料剂,通过NMP(N-甲基吡咯烷酮)调节胶粘剂浓度和控制B4C掺混比例,对PI胶粘剂和804胶水进行改性,并用于铝箔玻纤布的复合和耐温性能测试。研究结果表明:PI与NMP改性后的PI和804胶水,其耐温性能提升不明显;玻纤布中SiO_2(二氧化硅)易与B_4C发生反应,造成玻纤布强度明显下降,且对粘接特性改善作用不显著。     

耐高温胶粘剂研究进展

综述了国内外耐高温胶粘剂的发展概况,对环氧树脂(EP)、聚酰亚胺(PI)、酚醛树脂(PF)、聚氨酯(PU)等耐高温有机胶粘剂和磷酸盐、硅酸盐等耐高温无机胶粘剂的合成和改性研究现状作了详细论述,并对今后耐高温胶粘剂的发展趋势进行了展望。     

改性耐高温胶粘剂的研究进展

综述了近年来国内外改性耐高温胶粘剂的发展现状,对环氧树脂(EP)、酚醛树脂(PF)、有机硅、含氮杂环以及无机耐高温胶粘剂的性能、应用和改性方法进行了详细的论述,主要介绍了提高各种胶粘剂耐高温性能的改性方法和技术途径,并对今后改性耐高温胶粘剂的发展趋势作了展望。     

纳米材料改性木材胶粘剂的研究进展

简述了利用纳米材料和纳米技术改性木材胶粘剂,从而制得了性能优异的新型木材胶粘剂;总结了木材胶粘剂改性用纳米材料的种类及改性方法[如CNF(纳米纤维素)改性木材胶粘剂、纳米黏土改性木材胶粘剂等]的研究进展。最后对纳米材料与纳米技术改性木材胶粘剂的发展方向进行了展望。     

新型耐高温PI胶粘剂用单体的合成及表征

为了提高聚酰亚胺(PI)胶粘剂的耐热性能,将碳硼烷引入PI分子链中,首次合成出一种新型含碳硼烷的PI单体,并采用红外光谱(FT-IR)法对其结构进行了表征。结果表明:含碳硼烷的PI单体在400～500℃升温过程中可交联固化;以此作为PI胶粘剂的基体,可赋予PI胶粘剂极佳的热稳定性能(500～1 300℃时热失重变化不大),从而为制备耐高温胶粘剂提供了新的途径和新的方法。     

桉树皮灰改性乐器胶粘剂制备及性能研究

为了提高乐器胶粘剂的耐湿热稳定性和粘接性能,采用桉树皮灰(A)和偶联桉树皮灰(CA)对涂料胶粘剂进行了改性处理,研究了其占胶粘剂占比,以及添加面粉后对酚醛胶粘剂的改性效果。结果表明,相同改性剂添加量时,CA改性胶粘剂的干胶合强度和湿胶合强度都高于A改性胶粘剂;在相同占比下,偶联桉树皮灰+面粉(CAF)改性胶粘剂的干胶合强度和湿胶合强度都高于桉树皮灰+面粉(AF)改性胶粘剂。A改性胶粘剂的固化起始点、峰值、终止点和热焓值的变化趋势与CA改性胶粘剂较为相似,CA改性胶粘剂的固化峰值温度低于A改性胶粘剂。CAF占比为25%时胶粘剂具有较好的干胶合强度和湿胶合强度。     

环氧树脂及其胶粘剂的增韧改性研究进展

综述了环氧树脂(EP)及其胶粘剂的增韧改性研究进展。介绍了EP增韧方法[包括橡胶类弹性体增韧改性EP、互穿聚合物网络(IPN)增韧改性EP、聚硅氧烷(PDMS)增韧改性EP、纳米粒子增韧改性EP和超支化聚合物(HBP)增韧改性EP等]及相关增韧机制。展望了今后EP及其胶粘剂的增韧改性发展方向。     

脲醛树脂胶粘剂改性研究进展

综述了脲醛(UF)树脂胶粘剂改性研究进展,重点介绍了UF树脂胶粘剂的改性方法,阐述了UF树脂胶粘剂改性后的良好应用前景。     

聚乙烯与铝材的粘结研究

本文通过聚乙烯本性改性、表面改性以及粘合剂的选择,探讨了聚乙烯与铝材的粘结,发现通过表面改性或／和使用热交、可以使铝材和聚乙烯达到优良的粘结,在实际上可获得应用。     

Effect of Silane Coupling Agent on the Tensile Properties of Carbon Fiber-Reinforced Thermoplastic Polyimide Composites

Silane coupling agent SG-Si900 (SGS) modification and air-oxidation methods were used to improve the interfacial adhesion of the carbon fiber-reinforced polyimide (CF/PI) composite. The interfacial characteristics of the composites reinforced by the carbon fibers treated with different surface modification methods were comparatively investigated. Results showed that both SGS modification and air-oxidation method improved the adhesion between the reinforcement and matrix and SGS modification method was superior to air-oxidation method. For CF/PI composite the optimum interfacial adhesion was obtained at 0.3 wt% SGS concentration. The fracture surfaces of samples were investigated by scanning electronic microscopy (SEM) to analyze the effects of different surface treatment methods.     

用废聚苯乙烯泡沫塑料制备胶粘剂的研究

探讨了用废聚苯乙烯泡沫塑料（WPS）制备胶粘剂的原理，介绍了化学改性和共混改性的方法；改性剂，助剂，溶剂的选择以及几种改性实例。     

水性聚氨酯改性及其应用研究进展

综述了WPU(水性聚氨酯)共聚改性的几种方法(包括有机硅改性、丙烯酸酯改性、环氧树脂改性和纳米材料改性等),介绍了WPU在涂料、皮革加工、胶粘剂及纺织加工等行业的应用现状,指出了改性WPU的发展趋势。     

Effects of nitrogen plasma treatment of pressure-sensitive adhesive layer surfaces on their peel adhesion behavior

The influence of the surface modification of pressure-sensitive adhesive tapes on their adhesion behavior has been investigated. PBA [poly(butyl acrylate)] and PIB [poly(isobutylene)] adhesives were chosen as pressure-sensitive adhesives and nitrogen plasma was used for the surface modification of the adhesives. The peel force of PBA or PIB adhesive/stainless steel joints was evaluated. The nitrogen plasma treatment showed large effects on the adhesion behavior of both the PBA and the PIB adhesives. The peel force for the PBA adhesive/stainless steel joint decreased by 57 times as a result of the nitrogen plasma treatment and that for the PIB adhesive/stainless steel joint increased by 2.2 times. There are essential differences in the modification reactions caused by the nitrogen plasma between the PBA and PIB adhesives. For the PBA adhesive, cross-linking reactions occurred among the PBA polymer chains and the surface was hardened. For the PIB adhesive, degradation reactions occurred and products with a low molecular weight were formed on the surface. These differences are due to the different responses of the PBA and PIB adhesives towards the nitrogen plasma. The mechanism of the changes in adhesion behavior caused by the nitrogen plasma is discussed.     

改性水性聚氨酯及其粘接性能

综述了水性聚氨酯的改性方法,包括环氧树脂改性、丙烯酸酯改性、有机硅改性、有机氟改性、纳米材料改性、复合改性。比较了各种改性方法的优缺点,指出了水性聚氨酯胶粘剂所存在的问题,展望了水性聚氨酯胶粘剂改性发展趋势。     

表面处理碳纤维改性聚酰亚胺复合材料的机械性能

采用硅烷偶联剂KH-550、高温氧化和超声波+偶联剂复合方法(简称超声复合方法)分别对碳纤维(CF)进行表面处理,制备不同表面处理的CF改性热塑性聚酰亚胺(PI)复合材料,研究表面处理CF对CF/PI复合材料力学和摩擦磨损性能的影响,利用扫描电子显微镜对PI复合材料磨损表面进行观察。结果表明:与纯PI相比,CF的加入提高了PI复合材料的机械性能,经超声复合处理的CF的增强效果较好;磨损表面表明:超声复合处理CF改性PI复合材料磨损表面的犁沟和磨屑较少,且平整。     

SIS/SBS压敏胶改性方法

综述了SIS/SBS压敏胶的改性方法,分析了各种改性的原理,主要介绍了在弹性体上引入极性基团或链段的改性方法,添加其它类型的胶粘剂或添加剂来对压敏胶进行共混改性,以及利用电子束或紫外光进行化学交联实现对SIS/SBS压敏胶改性,并对比了这些改性方法的改性效果。     

Soy-based adhesives for wood-bonding – a review

Over recent years, the interest in bio-adhesives, including soy-based adhesives, has increased rapidly. Among natural renewable resources suitable for industrial use, soy is a reasonable choice due to its high production volume and the small use of soy meal-based products for human food consumption. Soy flour can be an ideal raw material for the manufacturing of wood adhesives due to its low cost, high protein content and easy processing. There are also more concentrated forms of soy proteins, i.e. concentrates and isolates, which are also suitable raw materials for adhesive production except that their prices are higher. Extensive research has been carried out on improving the cohesive properties, especially water resistance, of soy-based adhesives. However, there is insufficient experimental data available for understanding the influences of modification methods on the structure of soy proteins and therefore for understanding the influences of structural changes on the adhesion. In this paper, some experimental techniques are proposed to be used for analysing soy-based adhesives to enable better understanding of those factors and improve future development. This review of soy-based adhesives is made with the focus on soy proteins’ chemical composition, soy protein product types (raw materials for adhesive production), modification methods for improving the adhesive properties of soy-based adhesives, and commercial soy-based adhesives.     

聚四氟乙烯表面亲水改性研究进展

综述了国内外聚四氟乙烯(PTFE)表面亲水改性的研究进展,主要介绍了湿化学处理、低温等离子、辐射接枝、激光处理等方法在PTFE表面改性方面的应用情况,简要叙述了各改性方法的优缺点,并对PTFE表面改性的发展前景进行了展望.